Self-repairing electromagnetic polarity tool and discharging processing method

Abstract

The invention discloses a discharging processing method of a self-repairing electromagnetic polarity tool. A layer of magnetic powder layer is additionally arranged on the surface of a tool body of the electromagnetic polarity tool; in the processing procedure of workpieces, the electromagnetic polarity tool is connected with a rotary shaft and connected with a negative electrode of a power source, the workpieces are connected with a positive electrode of the power source (the electromagnetic polarity tool can also be connected with the positive electrode of the power source, and the workpieces can be connected with the negative electrode of the power source according to the actual processing demand), the electromagnetic polarity tool can be driven by the rotary shaft to rotate, and the discharging processing is carried out on the workpieces by the magnetic powder layer on the surface of the tool body; in the processing procedure, the magnetic powder of the magnetic powder layer undergoes discharging loss, the lost magnetic powder is replenished through a magnetic powder replenisher, and the magnetic powder layer can be quickly re-established after the replenishment of the magnetic powder, so that the geometrical parameter of the electromagnetic polarity tool is recovered to excellently realize the repair of the discharging loss of the tool. The discharging processing method has convenient and feasible technical means and positive technical effect.

Description

technical field [0001] The invention belongs to the field of electrical machining, in particular to a self-repairing electromagnetic pole tool and an electrical discharge machining method. Background technique [0002] Superhard materials are increasingly widely used in light industry papermaking, aerospace, electronics, automobiles and other industrial fields. At present, electric discharge machining (including electric discharge machining, electrochemical discharge composite machining, etc.) is one of the main methods for processing superhard materials. [0003] However, when the traditional EDM method is used to process the three-dimensional shape, the shaped electrode must be manufactured first. Because the shaped electrode is quite difficult to manufacture and install, the time and cost of its manufacturing can account for the total manufacturing cycle and cost. Therefore, it is particularly important to explore the use of simple standard electrodes for EDM of three-di...

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Problems solved by technology

[0003] However, when the traditional EDM method is used to process the three-dimensional shape, the shaped electrode must be manufactured first. Because the shaped electrode is quite difficult to manufacture and install, the time and cost of its manufacturing can account for the total manufacturing cycle and cost. Therefore, it is particularly important to explore the use of simple standard electrodes for EDM of three-dimensional shapes of superhard materials

[0004] However, in the process of using standard electrodes for electrical discharge machining, the loss of tool electrodes cannot be avoided, which undoubtedly greatly affects the machining accuracy and increases the cost of machining

[0005] In order to solve the problem of discharge loss of tool electrodes and promote the application of discharge machining in the field of superhard material processing, people have started to study related electrode loss compensation technologies since the 1980s. There are many solutions such as position trimming and online measurement and compensation of electrode loss, but these methods are far from practical production, and the problem of loss compensation in the standard electrode EDM process has not yet been well resolved.

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